Black Belt Sudoku(r)
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Book Overview
At home, while commuting, during lunch hours...people around the world are eagerly working on Sudoku puzzles whenever and wherever they can Created in the United States, these intriguing conundrums were originally called Number Place puzzles. Their recent rise in popularity began in Japan, where the name translated as sudoku. Here we've indicated the skill level necessary to complete each sudoku book in this series in the same way Japanese karate levels are ranked: by different colored belts. This is the Black Belt volume, filled with puzzles that will provide a sly, absorbing test for even the best, most proficient experts. It's impossible to complete only one sudoku at a time, because solving them is habit-forming
Format:Paperback
Language:English
ISBN:1402735987
ISBN13:9781402735981
Release Date:September 2005
Publisher:Puzzlewright
Length:192 Pages
Weight:0.54 lbs.
Dimensions:0.6" x 5.5" x 8.3"
Customer Reviews
4 ratings
Difficult?
Published by Thriftbooks.com User , 17 years ago
I've worked all four books, white, green, brown and black, and I'm not sure why these were supposed to be difficult. I actually found some of the ones in the green belt bookSecond-Degree Green Belt Sudoku (Martial Arts Sudoku) were much more difficult than these. In any case, they're still fun and easily worked with whatever technique you generally employ to solve them. I did find that mixing my techniques tended to lead me more often astray, and that I didn't generally discover my error until I had nearly finished the thing. My method has become one of see if the cross-overs find a lot of results then finish it that way. If you don't get a lot of results on your first pass through the columns and rows, then start over and do it the old fashioned list-the-numbers way!
Easy but expected
Published by Thriftbooks.com User , 17 years ago
The common complaint of this book seems to be that the puzzles are easy. Well, that's true. Sudoku puzzles can all be solved in polynomial time, which in layman's terms means that a computer can quickly solve one by blindly following an algorithm. They as a genre are not challenging. Doing these are fun when you have time to kill, for example I would do some while waiting for a flight. If you're looking for "hard" problems, quit whining about the polynomial time complex nature of Sudoku and try your hand at something actually HARD, like cryptography.
Great Fun
Published by Thriftbooks.com User , 18 years ago
I look forward to doing one of these puzzles every morning to kick-start my brain! Good size for carrying around.
Nice challenging puzzles
Published by Thriftbooks.com User , 19 years ago
I've really enjoyed this one. Some are real wooly boogers and others are just challenging. I'm addicted to these things!
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